<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<input type="text" />
		<select v-model="op">
			<option>+</option>
			<option>-</option>
			<option>*</option>
			<option>/</option>
		</select>
		<input type="text">
		<button>=</button>
		<input type="text" />
		
		<script>
			var app = Vue.createApp({
				data() {
					return {

					}
				}
			});
			var  vm=app.mount("#qpp")
		</script>
	</body>
</html>
